My troubleshooting thus far:
Disabled, deleted, reinstalled, and such for plugin Quick Cahche.
Changed permalinks. Result nothing.
Deactivated and reactivated blog, plugins, and such. Result nothing.
Restored to earlier wp-config and .htaccess. Result nothing.
Created new site. site and theme works fine with all pages and plugins.

Update 3. Disabled widget logic plugin network wide. Page loaded fully. But I need widget logic for my other sites and pages. So yeah haven't had a problem with it before. Not sure where to go from here.